用英语主持会议时，可以遵循以下步骤和短语：
Opening（宣布会议开始）
Good morning/afternoon, everyone.
If we are all here, let’s get started / start the meeting / start.
Welcoming and Introducing（欢迎和介绍出席人员）
Please join me in welcoming （name of participant）.
We’re pleased to welcome （name of participant）.
I’d like to extend a warm welcome to all our guests and participants today.
Stating the Principal Objectives of a Meeting（陈述会议的主要目标）
Today, we will discuss [topic of the meeting]. Our main objectives are to [state the objectives].
Giving Apologies for Someone Who is Absent（为缺席者道歉）
I would like to apologize for [name of absent person] who is unable to join us today.
Starting the Discussion（开始讨论）
Let’s begin with the first item on our agenda.
I’d like to ask [name of participant] to share their thoughts on this topic.
Managing the Meeting（管理会议）
To keep us on track, I’d like to remind everyone to stick to the agenda.
If you have any questions or comments, please raise your hand.
Closing the Meeting（结束会议）
Thank you all for your participation and valuable contributions.
Let’s wrap up the meeting and schedule the next one.
通过以上步骤和短语，你可以有效地用英语主持一场会议。确保在会议开始前准备好议程，并在会议过程中保持专业和有序。